Facilitation of adaptive dejitter buffer

ABSTRACT

A more robust and efficient flow of voice or other content packets can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted according to network conditions including handover. The dejitter buffer memory/depth can be adjusted in accordance with a delay interruption length associated with various handover types. Thereafter, the dejitter buffer memory can be filled with packet data to decrease a packet delay variation associated with handover.

TECHNICAL FIELD

This disclosure relates generally to facilitating downlink dejitterbuffer adaptation to minimize voice interruptions. More specifically,this disclosure relates to handovers of packet data between cell sites.

BACKGROUND

Jitter is the deviation from a true periodicity of a presumed periodicsignal in electronics and telecommunications, often in relation to areference clock source. Jitter can be observed in characteristics suchas a frequency of successive pulses, a signal amplitude, or a phase ofperiodic signals, Jitter is a significant, and usually undesired, factorin the design of communications links. Jitter can be quantified in thesame terms as all time-varying signals, e.g., root mean square (RMS), orpeak-to-peak displacement. Also like other time-varying signals, jittercan be expressed in terms of spectral density (frequency content).

Jitter period is the interval between two times of maximum effect (orminimum effect) of a signal characteristic that varies regularly withtime, and jitter frequency is its inverse, jitter may be caused byelectromagnetic interference (EMI) and crosstalk with carriers of othersignals. Jitter can cause a display monitor to flicker, affect theperformance of processors in personal computers, introduce clicks orother undesired effects in audio signals, and loss of transmitted databetween network devices. The amount of tolerable jitter depends on theaffected application.

In the context of computer networks, jitter is the variation in latencyas measured in the variability over time of the packet latency across anetwork, Packet jitter is expressed as an average of the deviation fromthe network mean latency and is an important quality of service factorin assessment of network performance.

Jitter buffers or de-jitter buffers can be used to counter jitterintroduced by queuing in packet switched networks so that a continuousplay out of audio (or video) transmitted over the network can beensured. The maximum jitter that can be countered by a de-jitter bufferis equal to the buffering delay introduced before starting the play-outof the media stream.

The above-described background relating to an adaptive dejitterbuffering is merely intended to provide a contextual overview of somecurrent issues, and is not intended to be exhaustive. Other contextualinformation may become further apparent upon review of the followingdetailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

Non-limiting and non-exhaustive embodiments of the subject disclosureare described with reference to the following figures, wherein likereference numerals refer to like parts throughout the various viewsunless otherwise specified.

FIG. 1 illustrates an example wireless network comprising a mobiledevice handoff of communication between cells according to one or moreembodiments.

FIG. 2 illustrates an example wireless network generating a dejitterbuffer based on a mobile device handoff of communication between cellsaccording to one or more embodiments.

FIG. 3 illustrates an example wireless network comprising a mobiledevice handoff of communication between cell site locations according toone or more embodiments.

FIG. 4 illustrates an example wireless network generating a dejitterbuffer based on a mobile device handoff of communication between cellsite locations according to one or more embodiments.

FIG. 5 illustrates an example schematic system block diagram forincreasing a dejitter buffer according to one or more embodiments.

FIG. 6 illustrates an example schematic system block diagram forincreasing a dejitter buffer to decrease a packet delay variationaccording to one or more embodiments.

FIG. 7 illustrates an example schematic system block diagram fordecreasing packet delay variation by increasing a dejitter bufferaccording to one or more embodiments.

FIG. 8 illustrates an example schematic system block diagram forproportionally decreasing a packet delay variation by increasing adejitter buffer according to one or more embodiments.

FIG. 9 illustrates an example schematic system block diagram forincreasing a dejitter buffer and decreasing packet delay variationaccording to one or more embodiments.

FIG. 10 illustrates an example schematic system block diagram forincreasing a dejitter buffer, decreasing packet delay variation, andgenerating an indication according to one or more embodiments.

FIG. 11 illustrates an example block diagram of an example mobilehandset operable to engage in a system architecture that facilitatessecure wireless communication according to one or more embodimentsdescribed herein.

FIG. 12 illustrates an example block diagram of an example computeroperable to engage in a system architecture that facilitates securewireless communication according to one or more embodiments describedherein.

DETAILED DESCRIPTION

In the following description, numerous specific details are set forth toprovide a thorough understanding of various embodiments. One skilled inthe relevant art will recognize, however, that the techniques describedherein can be practiced without one or more of the specific details, orwith other methods, components, materials, etc. In other instances,well-known structures, materials, or operations are not shown ordescribed in detail to avoid obscuring certain aspects.

Reference throughout this specification to “one embodiment,” or “anembodiment,” means that a particular feature, structure, orcharacteristic described in connection with the embodiment is includedin at least one embodiment. Thus, the appearances of the phrase “in oneembodiment,” “in one aspect,” or “in an embodiment,” in various placesthroughout this specification are not necessarily all referring to thesame embodiment. Furthermore, the particular features, structures, orcharacteristics may be combined in any suitable manner in one or moreembodiments.

As utilized herein, terms “component,” “system,” “interface,” and thelike are intended to refer to a computer-related entity, hardware,software (e.g., in execution), and/or firmware. For example, a componentcan be a processor, a process running on a processor, an object, anexecutable, a program, a storage device, and/or a computer. By way ofillustration, an application running on a server and the server can be acomponent. One or more components can reside within a process, and acomponent can be localized on one computer and/or distributed betweentwo or more computers.

Further, these components can execute from various computer readablemedia having various data structures stored thereon. The components cancommunicate via local and/or remote processes such as in accordance witha signal having one or more data packets (e.g., data from one componentinteracting with another component in a local system, distributedsystem, and/or across a network, e.g., the Internet, a local areanetwork, a wide area network, etc. with other systems via the signal).

As another example, a component can be an apparatus with specificfunctionality provided by mechanical parts operated by electric orelectronic circuitry; the electric or electronic circuitry can beoperated by a software application or a firmware application executed byone or more processors; the one or more processors can be internal orexternal to the apparatus and can execute at least a part of thesoftware or firmware application. As yet another example, a componentcan be an apparatus that provides specific functionality throughelectronic components without mechanical parts; the electroniccomponents can include one or more processors therein to executesoftware and/or firmware that confer(s), at least in part, thefunctionality of the electronic components. In an aspect, a componentcan emulate an electronic component via a virtual machine, e.g., withina cloud computing system.

The words “exemplary” and/or “demonstrative” are used herein to meanserving as an example, instance, or illustration. For the avoidance ofdoubt, the subject matter disclosed herein is not limited by suchexamples. In addition, any aspect or design described herein as“exemplary” and/or “demonstrative” is not necessarily to be construed aspreferred or advantageous over other aspects or designs, nor is it meantto preclude equivalent exemplary structures and techniques known tothose of ordinary skill in the art. Furthermore, to the extent that theterms “includes,” “has,” “contains,” and other similar words are used ineither the detailed description or the claims, such terms are intendedto be inclusive—in a manner similar to the term “comprising” as an opentransition word—without precluding any additional or other elements.

As used herein, the term “infer” or “inference” refers generally to theprocess of reasoning about, or inferring states of, the system,environment, user, and/or intent from a set of observations as capturedvia events and/or data. Captured data and events can include user data,device data, environment data, data from sensors, sensor data,application data, implicit data, explicit data, etc. Inference can beemployed to identify a specific context or action, or can generate aprobability distribution over states of interest based on aconsideration of data and events, for example.

Inference can also refer to techniques employed for composinghigher-level events from a set of events and/or data. Such inferenceresults in the construction of new events or actions from a set ofobserved events and/or stored event data, whether the events arecorrelated in close temporal proximity, and whether the events and datacome from one or several event and data sources. Various classificationschemes and/or systems (e.g., support vector machines, neural networks,expert systems, Bayesian belief networks, fuzzy logic, and data fusionengines) can be employed in connection with performing automatic and/orinferred action in connection with the disclosed subject matter.

In addition, the disclosed subject matter can be implemented as amethod, apparatus, or article of manufacture using standard programmingand/or engineering techniques to produce software, firmware, hardware,or any combination thereof to control a computer to implement thedisclosed subject matter. The term “article of manufacture” as usedherein is intended to encompass a computer program accessible from anycomputer-readable device, computer-readable carrier, orcomputer-readable media. For example, computer-readable media caninclude, but are not limited to, a magnetic storage device, e.g., harddisk; floppy disk; magnetic strip(s); an optical disk (e.g., compactdisk (CD), a digital video disc (DVD), a Blu-ray Disc™ (BD)); a smartcard; a flash memory device (e.g., card, stick, key drive); and/or avirtual device that emulates a storage device and/or any of the abovecomputer-readable media.

As an overview of the various embodiments presented herein, to correctfor the above-identified deficiencies and other drawbacks of traditionalcellular mobility management, various embodiments are described hereinto facilitate jitter reduction between mobile devices and networkdevices.

For simplicity of explanation, the methods (or algorithms) are depictedand described as a series of acts, it is to be understood andappreciated that the various embodiments are not limited by the actsillustrated and/or by the order of acts. For example, acts can occur invarious orders and/or concurrently, and with other acts not presented ordescribed herein. Furthermore, not all illustrated acts may be requiredto implement the methods. In addition, the methods could alternativelybe represented as a series of interrelated states via a state diagram orevents. Additionally, the methods described hereafter are capable ofbeing stored on an article of manufacture (e.g., a computer readablestorage medium) to facilitate transporting and transferring suchmethodologies to computers. The term article of manufacture, as usedherein, is intended to encompass a computer program accessible from anycomputer-readable device, carrier, or media, including a non-transitorycomputer readable storage medium.

Described herein are systems, methods, articles of manufacture, andother embodiments or implementations that can facilitate jitterreduction within a wireless network. Facilitating jitter reduction canbe implemented in connection with any type of device with a connectionto a communications network such as: a mobile handset, a computer, ahandheld device, or the like.

An adaptive downlink dejitter buffer can minimize downlink voiceinterruptions associated with voice over Internet protocol (VOIP)handovers between cell sites and radio technologies. Long term evolution(LTE), voice over LTE (VoLTE), and wireless fidelity (WIFI) are usedherein as but an example of the various packet carrier communicationtypes. However, these principles can be applicable to any packet voicetechnology with handovers. VOIP calls are more sensitive to handoverpacket flow interruptions for a number of reasons due to the nature ofhuman voice comprehension.

Voice comprehension can depend upon reception of complete sounds (at theear) in the correct order and cadence. Missing sounds can impact theability of the mind to interpret words, and sounds cannot be interpretedas words if received out of order, in a discontinuous flow, or if playedat an incomprehensible speed. Therefore, dejitter buffers are designedto reorder voice packets into a continuous flow prior to play-out ofsound at a speaker. However, the reordering capability is limited by adejitter buffer depth.

Voice conversations can comprise a real-time back and forth exchange ofvoice sounds for which the timing and content of latter sounds sent byone party is dependent upon the timing and content of prior sounds sentby (received from) another party. Voice conversations are severelyslowed, and rendered nearly useless, if packets are buffered for alengthy time (seconds) prior to play-out, specifically in the case forbursty data applications. Consequently, large dejitter buffers areimpractical for conversational speech.

VOIP dejitter buffers can dynamically adjust towards a target balance ofoverall mouth-to-ear latency and robustness, which can range from a 20ms to a 100 ms maximum depth depending upon historical packet flowcharacteristics such as jitter and packet loss. Dejitter buffers aregenerally kept for lengthier times when historical packet flowcharacteristics are poor, and they are shortened (for minimalmouth-to-ear latency) when historical packet flow characteristicsimprove. Although this methodology can be effective forstatic/stationary environments where transmission and reception changesare slow and gradual, this methodology can have relatively severelimitations within dynamic environments where transmission and receptionchanges are fast and dramatic. Non-stationary VoLTE calls, for example,face a constantly changing transmission/reception environment duringhandovers. In the handover case it can take between 60 m to 100 ms torestart the voice packet flow on a new cell after breaking the radioconnection and packet flow with the old cell, even in ideal conditionswhere the historical packet flow characteristics are good before thehandover.

Cross-technology handovers such as WIFI, VoLTE, and VoLTE to LTE mayinterrupt voice packet flows for hundreds of milliseconds (ms); yet thehistorical packet flow characteristics could have been acceptable priorto the handover. In both cases, acceptable historical packet flowcharacteristics cause traditional dejitter buffers to become quiteshallow (for example 20 ms) up until the handover. When the handoverdoes occur, downlink voice packets can be buffered and/or forwarded inthe packet core and/or radio schedulers until the flow is restarted onthe new cell. As mentioned previously, this can cause packets to arriveat a receiver between 60ms to 100 ms or later. Unfortunately, few ofthese buffered and forwarded packets are played out at the receiving endbecause the dejitter buffers were previously shortened (for example to20 ms) based on an ideal transmission/reception methodology just beforethe handover. Consequently, at the receiver end, any packets delayed bymore than the dejitter buffer limit (for example 20 ms) are discardedbefore play-out, which can result in noticeable voice interruptions andother impairments at handover.

This disclosure proposes a technique to offset temporary handover packetinterruptions by larger downlink dejitter buffers applied before thehandovers actually occur. This can allow additional buffered andforwarded voice packets to be played during and after handover, ratherthan be discarded, thereby reducing the voice interruption at handover.A VOIP dejitter buffer algorithm (a component of the VOIP “stack” in auser equipment device) can monitor the radio for signs of upcominghandover and proactively increase the dejitter buffer size before thehandover actually occurs. After the handover is complete (and until thenext handover) the dynamic dejitter buffer algorithm can revert to thetraditional use of historical packet flow characteristics to determinethe optimal dejitter buffer depth. The aforementioned technique cancomprise three primary components: upcoming handover detection, dejitterbuffer adaptation, and post-handover reversion.

During the upcoming handover detection process, upon arrival at each newLTE carrier, via call setup or handover, the user equipment (UE) radiocan receive a set of handover instructions from the evolved node b(eNB). Pertinent instructions can include criteria for when to takehandover measurements, which frequencies to measure, and relative signalstrength of old versus new cells (hysteresis) before the handover is tobe initiated. The user equipment (UE) radio can follow theseinstructions and receive/analyze measurements until specified criteriaare met. When the UE radio finds a neighbor cell (handover candidate) itcan inform the UE VoLTE stack (containing the dejitter buffer) that thehandover is about to occur. This “handover detection” message from radioto the VoLTE stack can comprise key handover type criterion such as:intra-LTE plus intra-frequency (shortest interruption), intra-LTE plusinter-frequency (longer interruption), inter radio access technology(RAT) WIFI to LTE (longest interruption), and/or poor radio conditions(for example transmission time interval bundling). The UE radio can waitfor a “ready for handover” response from the dejitter buffer. In mostcases the eNB can immediately initiate handover with the UE and thenetwork.

Furthermore, a self-learning dejitter buffer depth can be used forvarious handover types. The dejitter buffer depth can be pre-definedand/or learned/adapted according to packet flow characteristics compiledover a statistically valid set of handovers of each type. For instance,initially a typical intra-LTE intra frequency handover can comprise apre-defined dejitter buffer depth. However, the dejitter buffer depthcan increase or decrease according to actual packet flow interruption,observed jitter characteristics, and/or learned characteristics over aset of actual intra-LTE intra frequency handovers.

During the pre-handover dejitter buffer adaptation, upon reception ofthe handover detection message from the UE radio, the UE VoLTE stack canincrease the dejitter buffer depth, thus adding a cache of voice packetsto be played during handovers while packet reception is interrupted. Thelarger dejitter buffer depth can also allow for late reception,reordering, and play-out of voice packets buffered and forwarded duringand after the handover process. The depth of these enlarged dejitterbuffers can be proportional to the expected packet flow interruption forthe handover type. For example, intra-LTE plus intra-frequency handoversmay need a dejitter buffer depth greater than 80ms, and IRAT WIFI to LTEhandovers may need a 200 ms dejitter buffer depth. Once the depth of thedejitter buffer is determined, the VoLTE stack can defer play-out ofvoice packets for enough time to fill the dejitter buffer. This paceadjustment can be accomplished via gradual time-warping (playbackslowdown) and voice activity gap manipulation (larger gap). When theenlarged dejitter buffer is filled with voice packets the UE VoLTE stackcan send a “ready for handover” response to the UE radio. Upon receptionof the “ready for handover” response the UE radio can then forward themeasurement report to the eNB, thus initiating a traditional handoverprocess.

During the post-handover reversion, packet flow and dejitter bufferdepth with associated mouth-to-ear delay can return to normal after thehandover. Post-handover reversion can be coordinated between the UEradio and the VoLTE stack. Upon arrival and packet flow initiation atthe new cell or technology, the UE radio can send a “handover complete”message to the UE VoLTE stack. Around the same time the UE VoLTE stackcan receive a rush of forwarded/delayed voice packets that were bufferedduring the handover interval. The VoLTE stack can filter, reorder, andtime-adjust the voice packets for smooth playback. The voice packets canbe discarded if inter-packet arrival time is larger than the extendeddejitter buffer depth. Otherwise the initial post-handover voice packetscan be played out in the correct order at a slightly greater thanreal-time pace until the dejitter buffer depth is returned to a normalvalue suitable for historical post-handover packet flow conditions. Thispace adjustment can also be accomplished via gradual time-warping(playback speed-up) and voice activity gap manipulation (smaller gap).

The aforementioned technique can result in a more transparent VOIPhandover with less interruption and less associated voice qualitydegradation. For traditional intra-technology handovers, the voicequality experience can be improved, and this technique can be used toenable VOIP call mobility between radio technologies and layers that mayotherwise be impractical or insufficient for VOIP. For example, WIFI andother unlicensed spectrum technologies have been deemed impractical orof low quality for voice due to the lack of smooth mobility withlarge-area wireless technologies over a licensed spectrum.

Inter-technology handovers have traditionally been difficult tocoordinate and typically have long packet flow interruptions.Consequently, this technique can make the VOIP call quality andsubscriber experience more robust and tolerant in spite of theinter-technology packet flow interruptions.

In one embodiment, described herein is a method comprising receivingdata related to a handover condition associated with a mobile device,analyzing the data to determine a type of the handover, and increasing amemory size of a dejitter buffer based on the data and the type of thehandover. After increasing the memory size of the dejitter buffer, voicepacket data can be stored to fill the increased memory size of thedejitter buffer. Furthermore, other data related to the handovercondition being satisfied can be sent to the mobile device.

According to another embodiment, a system can facilitate, receivinghandover condition data associated with a signal handover of a mobiledevice between a first network device and a second network device. Thesystem can then analyze the handover condition data to determine ahandover interruption length, resulting in handover interruption lengthdata. The system can also proportionally decrease a packet delayvariation associated with queuing voice packet data based on thehandover interruption length data, resulting in an increased voicepacket data buffer. Thereafter, the system can store the voice packetdata in the increased voice packet data buffer and send an indication,that the handover condition has been satisfied, to the mobile device.

According to yet another embodiment, described herein is a computerreadable medium that can perform the operations comprising receivingvoice packet data related to a handover detection message and analyzingthe voice packet data to determine whether a condition related to avoice packet data size has been satisfied. Based on the condition beingsatisfied, the computer readable medium can increase a size of adejitter buffer, wherein the dejitter buffer decreases a packet delayvariation associated with queuing the voice packet data. The computerreadable medium can then store the voice packet data in the dejitterbuffer and send an indication of such to a mobile device.

These and other embodiments or implementations are described in moredetail below with reference to the drawings.

Referring now to FIG. 1, illustrated is an example wireless networkcomprising a mobile device handoff of communication between cellsaccording to one or more embodiments. It should be noted that a mobiledevice 100A, 100B, 100C can be represented at various points in time asit transitions from one location to another location. At an initialpoint in time, the mobile device 100A can communicate with a wirelessnetwork via a base station 102. As the mobile device 100A moves and getsto a point where a communication handover 106 can happen between thebase station 102 and another base station 104, the mobile device 100Bcan transition communication to the base station 104. Thereafter themobile device 100C can be in communication with the base station 104.

The graph in FIG. 1, depicts the jitter packet loss of the mobile device100A, 100B, 100C as it transitions communication between the basestations 102 104. While the mobile device 100A is near the base station102, the jitter and packet loss associated with the communication can beat a minimal level. However, as the mobile device 100B transitionsbetween the base stations 102 104, there can be a spike 108 in thejitter and the packet loss during the handover 106. Thereafter, as themobile device 100C communicates with the base station 104, the jitterand the packet loss can be returned to a minimal level.

Referring now to FIG. 2, illustrated is an example wireless networkgenerating a dejitter buffer based on a mobile device handoff ofcommunication between cells according to one or more embodiments. Itshould be noted that a mobile device 200A, 200B, 200C can be representedat various points in time as it transitions from one location to anotherlocation. At an initial point in time, the mobile device 200A cancommunicate with a wireless network via a base station 202. As themobile device 200A moves and gets to a point where a communicationhandover 206 can happen between the base station 202 and another basestation 204, the mobile device 200B can transition communication to theother base station 204. Thereafter the mobile device 200C can be incommunication the other base station 204.

The graph in FIG. 2 depicts the dejitter packet loss and buffer depth ofthe mobile device 200A, 200B, 200C as it transitions communicationbetween the base stations 202 204. While the mobile device 200A is nearthe base station 202, the jitter and packet loss associated with thecommunication can be at a minimal level. However, as the mobile device100B transitions between the base stations 202 204, there can be a spike208 in the jitter and the packet loss during the handover 206. Tocompensate for the spike 208 in the jitter and packet loss, during thehandover 206, the dejitter buffer depth 210 can be increased. The mobiledevice 200 VoLTE stack can increase the dejitter buffer depth 210 andadd a cache of voice packets to be played during handovers while packetreception is interrupted during the handover 206. The larger dejitterbuffer depth 210 can also allow for late reception, reordering, andplay-out of voice packets buffered and forwarded during and after thehandover 206 process. The depth of the enlarged dejitter buffer can beproportional to the expected packet flow interruption for a handovertype. Thereafter, as the mobile device 200C communicates with the basestation 204, the jitter and the packet loss can be returned to a minimallevel.

Referring now to FIG. 3, illustrated is an example wireless networkcomprising a mobile device handoff of communication between cell sitelocations according to one or more embodiments. It should be noted thata mobile device 300A, 300B, 300C, 300D can be represented at variouspoints in time as it transitions from one cell site 304 location toanother location. The cell site 304 can have several cell site locations304A, 304B, 304C. At an initial point in time, the mobile device 300Acan communicate with the cell site location 304C from a distance. As thedistance is decreased, the mobile device 300B can communicate with thecell site location 304C. As the mobile device transitions between thecell site location 304C and another cell site location 304B acommunication handover 302 can happen between the cell site locations304C 304B. Thereafter the mobile device 300D can be in communicationwith the other cell site location 304B as its distance from the othercell site location 304B increases.

The graph in FIG. 3 depicts the jitter and packet loss of the mobiledevice 300A, 300B, 300C, 300D as it transitions communication betweenthe cell site locations 304A, 304B, 304C. While the mobile device 300Ais further away from cell site location 304C, the jitter and packet lossassociated with the communication can be at a heightened level. However,as the mobile device 300B gets closer to the other cell site location304C and begins transitioning communication to the other cell sitelocation 304B, there can be a spike 306 in the jitter and the packetloss during the handover 302. Thereafter, as the mobile device 300C 300Dcommunicates with the other cell site location 304B, the jitter and thepacket loss can return to a heightened level as the mobile device 300Dincreases its distance.

Referring now to FIG. 4, illustrated is an example wireless networkgenerating a dejitter buffer based on a mobile device handoff ofcommunication between cell site locations according to one or moreembodiments. It should be noted that a mobile device 400A, 400B, 400C,400D can be represented at various points in time as it transitions fromone cell site 404 location to another location. The cell site 404 canhave several cell site locations 404A, 404B, 404C. At an initial pointin time, the mobile device 400A can communicate with the cell site 404Cfrom a distance. As the distance is decreased, the mobile device 400Bcan communicate with the cell site location 404C. As the mobile devicetransitions between the cell site location 404C and another cell sitelocation 404B a communication handover 402 can happen between the cellsite locations 404C 404B. Thereafter the mobile device 400D can be incommunication with the other cell site location 404B as its distancefrom the other cell site location 404B increases.

The graph in FIG. 4 depicts the jitter and packet loss of the mobiledevice 400A, 400B, 400C, 400D as it transitions communication betweenthe cell site locations 404A, 404B, 404C. While the mobile device 400Ais further away from cell site location 404C, the jitter and packet lossassociated with the communication can be at a heightened level. However,as the mobile device 400B gets closer to cell site location 404C andbegins transitioning communication to the other cell site location 404B,there can be a spike 406 in the jitter and the packet loss during thehandover 402. To compensate for the spike 408 in the jitter and packetloss, during handover 402, the dejitter buffer depth 408 can beincreased. The mobile device 400 VoLTE stack can increase the dejitterbuffer depth 408 and add a cache of voice packets to be played duringhandovers while packet reception is interrupted during the handover 402.The larger dejitter buffer depth 408 can also allow for late reception,reordering, and play-out of voice packets buffered and forwarded duringand after the handover 402 process. The depth of the enlarged dejitterbuffer can be proportional to the expected packet flow interruption fora handover type. Thereafter, as the mobile device 400C 400D communicateswith the other cell site location 404B, the jitter and the packet losscan return to a heightened level as the mobile device 400D increases itsdistance from the other cell site location 404B.

Referring now to FIG. 5, illustrated is an example schematic systemblock diagram for increasing a dejitter buffer according to one or moreembodiments. At element 500, data related to a handover conditionassociated with a mobile device and other network devices relating to ahandover of the mobile device can be received. The data can include, butis not limited to, handover measurement data, frequency data, and signalstrength data. The data can then be analyzed at element 502 to determinea type of the handover. The type of handover can comprise intra-LTE plusintra-frequency, intra-LTE plus inter-frequency, IRAT WIFI to LTE,and/or a transmission time interval bundling. At element 504, a memorysize of a dejitter buffer can be increased based on the data and thetype of the handover resulting in an increased memory size of thedejitter buffer. The mobile device VoLTE stack can increase the memorysize of the dejitter buffer by adding a cache of voice packets to beplayed during handovers while packet reception is interrupted. Theincreased dejitter buffer memory size can allow for late reception,reordering, and play-out of voice packets buffered and forwarded duringand after the handover process. Moreover, the increased memory size ofthe dejitter buffer can be proportional to the expected packet flowinterruption for the handover type.

At element 506, the voice packet data can be stored to a capacity of theincreased memory size of the dejitter buffer. Once the memory size ofthe dejitter buffer is determined, the VoLTE stack can defer play-out ofvoice packets for enough time to fill the dejitter buffer. This paceadjustment can be accomplished via gradual time-warping and voiceactivity gap manipulation. After element 506, other data related to thehandover condition being satisfied can be sent to the mobile device atelement 508. Therefore, after the increased dejitter buffer memory isfilled with voice packet data, the mobile device VoLTE stack can send aresponse to the mobile device.

Referring now to FIG. 6, illustrated is an example schematic systemblock diagram for increasing a dejitter buffer to decrease a packetdelay variation according to one or more embodiments. At element 600,data related to a handover condition associated with a mobile device andother network devices relating to a handover of the mobile device can bereceived. The data can include, but is not limited to, handovermeasurement data, frequency data, and signal strength data. The data canthen be analyzed at element 602 to determine a type of the handover. Thetype of handover can comprise intra-LTE plus intra-frequency, intra-LTEplus inter-frequency, IRAT WIFI to LTE, and/or a transmission timeinterval bundling. At element 604, a memory size of a dejitter buffercan be increased based on the data and the type of the handoverresulting in an increased memory size of the dejitter buffer. The mobiledevice VoLTE stack can increase the memory size of the dejitter bufferby adding a cache of voice packets to be played during handovers whilepacket reception is interrupted. The increased dejitter buffer memorysize can allow for late reception, reordering, and play-out of voicepackets buffered and forwarded during and after the handover process.Moreover, the increased memory size of the dejitter buffer can beproportional to the expected packet flow interruption for the handovertype.

At element 606, the voice packet data can be stored to a capacity of theincreased memory size of the dejitter buffer. Once the memory size ofthe dejitter buffer is determined, the VoLTE stack can defer play-out ofvoice packets for enough time to fill the dejitter buffer. This paceadjustment can be accomplished via gradual time-warping and voiceactivity gap manipulation. After element 606, other data related to thehandover condition being satisfied can be sent to the mobile device.Therefore, after the increased dejitter buffer memory is filled withvoice packet data, the mobile device VoLTE stack can send a response tothe mobile device at element 608. At element 610, the dejitter buffercan decrease a packet delay variation associated with queuing the voicepacket data.

Referring now to FIG. 7, illustrated is an example schematic systemblock diagram for decreasing packet delay variation by increasing adejitter buffer according to one or more embodiments. At element 700,the system can receive handover condition data associated with a signalhandover of a mobile device between a first network device and a secondnetwork device. The network devices can be cellular sites/base stationsused to facilitate wireless communication with wireless devices. Thehandover condition data can include, but is not limited to, handovermeasurement data, frequency data, and signal strength data. At element702, the handover condition data can be analyzed to determine a handoverinterruption length, resulting in handover interruption length datarepresentative of the handover interruption length. The type of handoverinterruption length can comprise intra-LTE plus intra-frequency,intra-LTE plus inter-frequency, IRAT WIFI to LTE, and/or a transmissiontime interval bundling.

At element 704, proportionally increasing a voice packet data bufferassociated with queuing voice packet data based on the handoverinterruption length data, resulting in a decreased packet delayvariation storing voice packet data in the increased voice packet databuffer. The mobile device VoLTE stack can increase the memory size ofthe dejitter buffer by adding a cache of voice packets to be playedduring handovers while packet reception is interrupted. The increaseddejitter buffer memory size can allow for late reception, reordering,and play-out of voice packets buffered and forwarded during and afterthe handover process. Moreover, the increased memory size of thedejitter buffer can be proportional to the expected packet flowinterruption. Thereafter, the voice packet data can be stored in theincreased voice packet data buffer at element 706. Once the memory sizeof the dejitter buffer is determined, the VoLTE stack can defer play-outof voice packets for enough time to fill the dejitter buffer. This paceadjustment can be accomplished via gradual time-warping and voiceactivity gap manipulation. Additionally, an indication that the handovercondition has been determined to have been satisfied can be sent to themobile device at element 708.

Referring now to FIG. 8, illustrated is an example schematic systemblock diagram for proportionally decreasing a packet delay variation byincreasing a dejitter buffer according to one or more embodiments. Atelement 800, the system can receive handover condition data associatedwith a signal handover of a mobile device between a first network deviceand a second network device. The network devices can be cellularsites/base stations used to facilitate wireless communication withwireless devices. The handover condition data can include, but is notlimited to, handover measurement data, frequency data, and signalstrength data. At element 802, the handover condition data can beanalyzed to determine a handover interruption length, resulting inhandover interruption length data representative of the handoverinterruption length. The type of handover interruption length cancomprise intra-LTE plus intra-frequency, intra-LTE plus inter-frequency,IRAT WIFI to LTE, and/or a transmission time interval bundling.

At element 804, proportionally increasing a voice packet data bufferassociated with queuing voice packet data based on the handoverinterruption length data, resulting in a decreased packet delayvariation storing voice packet data in the increased voice packet databuffer. The mobile device VoLTE stack can increase the memory size ofthe dejitter buffer by adding a cache of voice packets to be playedduring handovers while packet reception is interrupted. The increaseddejitter buffer memory size can allow for late reception, reordering,and play-out of voice packets buffered and forwarded during and afterthe handover process. Moreover, the increased memory size of thedejitter buffer can be proportional to the expected packet flowinterruption. Thereafter, the voice packet data can be stored in theincreased voice packet data buffer at element 806. Once the memory sizeof the dejitter buffer is determined, the VoLTE stack can defer play-outof voice packets for enough time to fill the dejitter buffer. This paceadjustment can be accomplished via gradual time-warping and voiceactivity gap manipulation. Additionally, an indication that the handovercondition has been determined to have been satisfied can be sent to themobile device at element 808 and wherein the proportionally increasingthe voice packet data buffer is in response to receiving handoverdetection message data from the mobile device at element 810.

Referring now to FIG. 9, illustrated is an example schematic systemblock diagram for increasing a dejitter buffer and decreasing packetdelay variation according to one or more embodiments. At element 900,voice packet data related to a handover detection message associatedwith a handover of a mobile device signal can be received. The data caninclude, but is not limited to, handover measurement data, frequencydata, and signal strength data. The voice packet data can be analyzed atelement 902 to determine whether a condition related to a voice packetdata size has been satisfied. The voice packet data size information cancomprise intra-LTE plus intra-frequency, intra-LTE plus inter-frequency,IRAT WIFI to LTE, and/or a transmission time interval bundling. Based onthe condition being determined to have been satisfied, a size of adejitter buffer can be increased from a first capacity to a secondcapacity. The mobile device VoLTE stack can increase the memory size ofthe dejitter buffer by adding a cache of voice packets to be playedduring handovers while packet reception is interrupted. The increaseddejitter buffer memory size can allow for late reception, reordering,and play-out of voice packets buffered and forwarded during and afterthe handover process. Moreover, the increased memory size of thedejitter buffer can be proportional to the expected packet flowinterruption for the handover type. The dejitter buffer can alsodecrease a packet delay variation associated with queuing the voicepacket data at element 904.

The voice packet data can be stored in the dejitter buffer until thedejitter buffer is at the second capacity at element 906. Once thememory size of the dejitter buffer is determined, the VoLTE stack candefer play-out of voice packets for enough time to fill the dejitterbuffer. This pace adjustment can be accomplished via gradualtime-warping and voice activity gap manipulation. At element 908, anindication that the dejitter buffer is at the second capacity can besent to a mobile device. When the dejitter buffer is filled with voicepackets, the mobile device VoLTE stack can send a response message tothe other another mobile device radio. Upon reception of a “ready forhandover” response the other mobile device radio can then forward themeasurement report to an eNB, thus initiating a traditional handoverprocess.

Referring now to FIG. 10, illustrated is an example schematic systemblock diagram for increasing a dejitter buffer, decreasing packet delayvariation, and generating an indication according to one or moreembodiments. At element 1000, voice packet data related to a handoverdetection message associated with a handover of a mobile device signalcan be received. The data can include, but is not limited to, handovermeasurement data, frequency data, and signal strength data. The voicepacket data can be analyzed at element 1002 to determine whether acondition related to a voice packet data size has been satisfied. Thevoice packet data size information can comprise intra-LTE plusintra-frequency, intra-LTE plus inter-frequency, IRAT WIFI to LTE,and/or a transmission time interval bundling. Based on the conditionbeing determined to have been satisfied, a size of a dejitter buffer canbe increased from a first capacity to a second capacity. The mobiledevice VoLTE stack can increase the memory size of the dejitter bufferby adding a cache of voice packets to be played during handovers whilepacket reception is interrupted. The increased dejitter buffer memorysize can allow for late reception, reordering, and play-out of voicepackets buffered and forwarded during and after the handover process.Moreover, the increased memory size of the dejitter buffer can beproportional to the expected packet flow interruption for the handovertype. The dejitter buffer can also decrease a packet delay variationassociated with queuing the voice packet data at element 1002.

The voice packet data can be stored in the dejitter buffer until thedejitter buffer is at the second capacity at element 1006. Once thememory size of the dejitter buffer is determined, the VoLTE stack candefer play-out of voice packets for enough time to fill the dejitterbuffer. This pace adjustment can be accomplished via gradualtime-warping and voice activity gap manipulation. At element 1008, anindication that the dejitter buffer is at the second capacity can besent to a mobile device and at element 1010, another indication that thedejitter buffer is at the second capacity can be generated. When thedejitter buffer is filled with voice packets, the mobile device VoLTEstack can send a response message to a mobile device radio. Uponreception of a response the mobile device radio can then forward ameasurement report to an eNB, thus initiating a traditional handoverprocess.

Referring now to FIG. 11, illustrated is a schematic block diagram of anexemplary end-user device such as a mobile device 1100 capable ofconnecting to a network in accordance with some embodiments describedherein. Although a mobile handset 1100 is illustrated herein, it will beunderstood that other devices can be a mobile device, and that themobile handset 1100 is merely illustrated to provide context for theembodiments of the various embodiments described herein. The followingdiscussion is intended to provide a brief, general description of anexample of a suitable environment 1100 in which the various embodimentscan be implemented. While the description includes a general context ofcomputer-executable instructions embodied on a computer readable storagemedium, those skilled in the art will recognize that the innovation alsocan be implemented in combination with other program modules and/or as acombination of hardware and software.

Generally, applications (e.g., program modules) can include routines,programs, components, data structures, etc., that perform particulartasks or implement particular abstract data types. Moreover, thoseskilled in the art will appreciate that the methods described herein canbe practiced with other system configurations, includingsingle-processor or multiprocessor systems, minicomputers, mainframecomputers, as well as personal computers, hand-held computing devices,microprocessor-based or programmable consumer electronics, and the like,each of which can be operatively coupled to one or more associateddevices.

A computing device can typically include a variety of computer-readablemedia. Computer readable media can be any available media that can beaccessed by the computer and includes both volatile and non-volatilemedia, removable and non-removable media. By way of example and notlimitation, computer-readable media can comprise computer storage mediaand communication media. Computer storage media can include volatileand/or non-volatile media, removable and/or non-removable mediaimplemented in any method or technology for storage of information, suchas computer-readable instructions, data structures, program modules orother data. Computer storage media can include, but is not limited to,RAM, ROM, EEPROM, flash memory or other memory technology, CD ROM,digital video disk (DVD) or other optical disk storage, magneticcassettes, magnetic tape, magnetic disk storage or other magneticstorage devices, or any other medium which can be used to store thedesired information and which can be accessed by the computer.

Communication media typically embodies computer-readable instructions,data structures, program modules or other data in a modulated datasignal such as a carrier wave or other transport mechanism, and includesany information delivery media. The term “modulated data signal” means asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in the signal. By way of example,and not limitation, communication media includes wired media such as awired network or direct-wired connection, and wireless media such asacoustic, RF, infrared and other wireless media. Combinations of the anyof the above should also be included within the scope ofcomputer-readable media.

The handset 1100 includes a processor 1102 for controlling andprocessing all onboard operations and functions. A memory 1104interfaces to the processor 1102 for storage of data and one or moreapplications 1106 (e.g., a video player software, user feedbackcomponent software, etc.). Other applications can include voicerecognition of predetermined voice commands that facilitate initiationof the user feedback signals. The applications 1106 can be stored in thememory 1104 and/or in a firmware 1108, and executed by the processor1102 from either or both the memory 1104 or/and the firmware 1108. Thefirmware 1108 can also store startup code for execution in initializingthe handset 1100. A communications component 1110 interfaces to theprocessor 1102 to facilitate wired/wireless communication with externalsystems, e.g., cellular networks, VoIP networks, and so on. Here, thecommunications component 1110 can also include a suitable cellulartransceiver 1111 (e.g., a GSM transceiver) and/or an unlicensedtransceiver 1113 (e.g., Wi-Fi, WiMax) for corresponding signalcommunications. The handset 1100 can be a device such as a cellulartelephone, a PDA with mobile communications capabilities, andmessaging-centric devices. The communications component 1110 alsofacilitates communications reception from terrestrial radio networks(e.g., broadcast), digital satellite radio networks, and Internet-basedradio services networks.

The handset 1100 includes a display 1112 for displaying text, images,video, telephony functions (e.g., a Caller ID function), setupfunctions, and for user input. For example, the display 1112 can also bereferred to as a “screen” that can accommodate the presentation ofmultimedia content (e.g., music metadata, messages, wallpaper, graphics,etc.). The display 1112 can also display videos and can facilitate thegeneration, editing and sharing of video quotes. A serial I/O interface1114 is provided in communication with the processor 1102 to facilitatewired and/or wireless serial communications (e.g., USB, and/or IEEE1394) through a hardwire connection, and other serial input devices(e.g., a keyboard, keypad, and mouse). This supports updating andtroubleshooting the handset 1100, for example. Audio capabilities areprovided with an audio I/O component 1116, which can include a speakerfor the output of audio signals related to, for example, indication thatthe user pressed the proper key or key combination to initiate the userfeedback signal. The audio I/O component 1116 also facilitates the inputof audio signals through a microphone to record data and/or telephonyvoice data, and for inputting voice signals for telephone conversations.

The handset 1100 can include a slot interface 1118 for accommodating aSIC (Subscriber Identity Component) in the form factor of a cardSubscriber Identity Module (SIM) or universal SIM 1120, and interfacingthe SIM card 1120 with the processor 1102. However, it is to beappreciated that the SIM card 1120 can be manufactured into the handset1100, and updated by downloading data and software.

The handset 1100 can process IP data traffic through the communicationcomponent 1110 to accommodate IP traffic from an IP network such as, forexample, the Internet, a corporate intranet, a home network, a personarea network, etc., through an ISP or broadband cable provider. Thus,VoIP traffic can be utilized by the handset 800 and IP-based multimediacontent can be received in either an encoded or decoded format.

A video processing component 1122 (e.g., a camera) can be provided fordecoding encoded multimedia content. The video processing component 1122can aid in facilitating the generation, editing and sharing of videoquotes. The handset 1100 also includes a power source 1124 in the formof batteries and/or an AC power subsystem, which power source 1124 caninterface to an external power system or charging equipment (not shown)by a power I/O component 1126.

The handset 1100 can also include a video component 1130 for processingvideo content received and, for recording and transmitting videocontent. For example, the video component 1130 can facilitate thegeneration, editing and sharing of video quotes. A location trackingcomponent 1132 facilitates geographically locating the handset 1100. Asdescribed hereinabove, this can occur when the user initiates thefeedback signal automatically or manually. A user input component 1134facilitates the user initiating the quality feedback signal. The userinput component 1134 can also facilitate the generation, editing andsharing of video quotes. The user input component 1134 can include suchconventional input device technologies such as a keypad, keyboard,mouse, stylus pen, and/or touch screen, for example.

Referring again to the applications 1106, a hysteresis component 1136facilitates the analysis and processing of hysteresis data, which isutilized to determine when to associate with the access point. Asoftware trigger component 1138 can be provided that facilitatestriggering of the hysteresis component 1138 when the Wi-Fi transceiver1113 detects the beacon of the access point. A SIP client 1140 enablesthe handset 1100 to support SIP protocols and register the subscriberwith the SIP registrar server. The applications 1106 can also include aclient 1142 that provides at least the capability of discovery, play andstore of multimedia content, for example, music.

The handset 1100, as indicated above related to the communicationscomponent 810, includes an indoor network radio transceiver 1113 (e.g.,Wi-Fi transceiver). This function supports the indoor radio link, suchas IEEE 802.11, for the dual-mode GSM handset 1100. The handset 1100 canaccommodate at least satellite radio services through a handset that cancombine wireless voice and digital radio chipsets into a single handhelddevice.

Referring now to FIG. 12, there is illustrated a block diagram of acomputer 1200 operable to execute a system architecture that facilitatesestablishing a transaction between an entity and a third party. Thecomputer 1200 can provide networking and communication capabilitiesbetween a wired or wireless communication network and a server and/orcommunication device. In order to provide additional context for variousaspects thereof, FIG. 12 and the following discussion are intended toprovide a brief, general description of a suitable computing environmentin which the various aspects of the innovation can be implemented tofacilitate the establishment of a transaction between an entity and athird party. While the description above is in the general context ofcomputer-executable instructions that can run on one or more computers,those skilled in the art will recognize that the innovation also can beimplemented in combination with other program modules and/or as acombination of hardware and software.

Generally, program modules include routines, programs, components, datastructures, etc., that perform particular tasks or implement particularabstract data types. Moreover, those skilled in the art will appreciatethat the inventive methods can be practiced with other computer systemconfigurations, including single-processor or multiprocessor computersystems, minicomputers, mainframe computers, as well as personalcomputers, hand-held computing devices, microprocessor-based orprogrammable consumer electronics, and the like, each of which can beoperatively coupled to one or more associated devices.

The illustrated aspects of the innovation can also be practiced indistributed computing environments where certain tasks are performed byremote processing devices that are linked through a communicationsnetwork. In a distributed computing environment, program modules can belocated in both local and remote memory storage devices.

Computing devices typically include a variety of media, which caninclude computer-readable storage media or communications media, whichtwo terms are used herein differently from one another as follows.

Computer-readable storage media can be any available storage media thatcan be accessed by the computer and includes both volatile andnonvolatile media, removable and non-removable media. By way of example,and not limitation, computer-readable storage media can be implementedin connection with any method or technology for storage of informationsuch as computer-readable instructions, program modules, structureddata, or unstructured data. Computer-readable storage media can include,but are not limited to, RAM, ROM, EEPROM, flash memory or other memorytechnology, CD-ROM, digital versatile disk (DVD) or other optical diskstorage, magnetic cassettes, magnetic tape, magnetic disk storage orother magnetic storage devices, or other tangible and/or non-transitorymedia which can be used to store desired information. Computer-readablestorage media can be accessed by one or more local or remote computingdevices, e.g., via access requests, queries or other data retrievalprotocols, for a variety of operations with respect to the informationstored by the medium.

Communications media can embody computer-readable instructions, datastructures, program modules or other structured or unstructured data ina data signal such as a modulated data signal, e.g., a carrier wave orother transport mechanism, and includes any information delivery ortransport media. The term “modulated data signal” or signals refers to asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in one or more signals. By way ofexample, and not limitation, communication media include wired media,such as a wired network or direct-wired connection, and wireless mediasuch as acoustic, RF, infrared and other wireless media.

With reference to FIG. 12, implementing various aspects described hereinwith regards to the end-user device can include a computer 1200, thecomputer 1200 including a processing unit 1204, a system memory 1206 anda system bus 1208. The system bus 1208 couples system componentsincluding, but not limited to, the system memory 1206 to the processingunit 1204. The processing unit 1204 can be any of various commerciallyavailable processors. Dual microprocessors and other multi processorarchitectures can also be employed as the processing unit 1204.

The system bus 1208 can be any of several types of bus structure thatcan further interconnect to a memory bus (with or without a memorycontroller), a peripheral bus, and a local bus using any of a variety ofcommercially available bus architectures. The system memory 1206includes read-only memory (ROM) 1210 and random access memory (RAM)1212. A basic input/output system (BIOS) is stored in a non-volatilememory 1210 such as ROM, EPROM, EEPROM, which BIOS contains the basicroutines that help to transfer information between elements within thecomputer 1200, such as during start-up. The RAM 1212 can also include ahigh-speed RAM such as static RAM for caching data.

The computer 1200 further includes an internal hard disk drive (HDD)1214 (e.g., EIDE, SATA), which internal hard disk drive 1214 can also beconfigured for external use in a suitable chassis (not shown), amagnetic floppy disk drive (FDD) 1216, (e.g., to read from or write to aremovable diskette 1218) and an optical disk drive 1220, (e.g., readinga CD-ROM disk 1222 or, to read from or write to other high capacityoptical media such as the DVD). The hard disk drive 1214, magnetic diskdrive 1216 and optical disk drive 1211 can be connected to the systembus 1208 by a hard disk drive interface 1224, a magnetic disk driveinterface 1226 and an optical drive interface 1228, respectively. Theinterface 1224 for external drive implementations includes at least oneor both of Universal Serial Bus (USB) and IEEE 1294 interfacetechnologies. Other external drive connection technologies are withincontemplation of the subject innovation.

The drives and their associated computer-readable media providenonvolatile storage of data, data structures, computer-executableinstructions, and so forth. For the computer 1200 the drives and mediaaccommodate the storage of any data in a suitable digital format.Although the description of computer-readable media above refers to aHDD, a removable magnetic diskette, and a removable optical media suchas a CD or DVD, it should be appreciated by those skilled in the artthat other types of media which are readable by a computer 1200, such aszip drives, magnetic cassettes, flash memory cards, cartridges, and thelike, can also be used in the exemplary operating environment, andfurther, that any such media can contain computer-executableinstructions for performing the methods of the disclosed innovation.

A number of program modules can be stored in the drives and RAM 1212,including an operating system 1230, one or more application programs1232, other program modules 1234 and program data 1236. All or portionsof the operating system, applications, modules, and/or data can also becached in the RAM 1212. It is to be appreciated that the innovation canbe implemented with various commercially available operating systems orcombinations of operating systems.

A user can enter commands and information into the computer 1200 throughone or more wired/wireless input devices, e.g., a keyboard 1238 and apointing device, such as a mouse 1240. Other input devices (not shown)may include a microphone, an IR remote control, a joystick, a game pad,a stylus pen, touch screen, or the like. These and other input devicesare often connected to the processing unit 1204 through an input deviceinterface 1242 that is coupled to the system bus 1208, but can beconnected by other interfaces, such as a parallel port, an IEEE 2394serial port, a game port, a USB port, an IR interface, etc.

A monitor 1244 or other type of display device is also connected to thesystem bus 1208 through an interface, such as a video adapter 1246. Inaddition to the monitor 1244, a computer 1200 typically includes otherperipheral output devices (not shown), such as speakers, printers, etc.

The computer 1200 can operate in a networked environment using logicalconnections by wired and/or wireless communications to one or moreremote computers, such as a remote computer(s) 1248. The remotecomputer(s) 1248 can be a workstation, a server computer, a router, apersonal computer, portable computer, microprocessor-based entertainmentdevice, a peer device or other common network node, and typicallyincludes many or all of the elements described relative to the computer,although, for purposes of brevity, only a memory/storage device 1250 isillustrated. The logical connections depicted include wired/wirelessconnectivity to a local area network (LAN) 1252 and/or larger networks,e.g., a wide area network (WAN) 1254. Such LAN and WAN networkingenvironments are commonplace in offices and companies, and facilitateenterprise-wide computer networks, such as intranets, all of which mayconnect to a global communications network, e.g., the Internet.

When used in a LAN networking environment, the computer 1200 isconnected to the local network 1252 through a wired and/or wirelesscommunication network interface or adapter 1256. The adapter 1256 mayfacilitate wired or wireless communication to the LAN 1252, which mayalso include a wireless access point disposed thereon for communicatingwith the wireless adapter 1256.

When used in a WAN networking environment, the computer 1200 can includea modem 1258, or is connected to a communications server on the WAN1254, or has other means for establishing communications over the WAN1254, such as by way of the Internet. The modem 1258, which can beinternal or external and a wired or wireless device, is connected to thesystem bus 1208 through the serial port interface 1242. In a networkedenvironment, program modules depicted relative to the computer, orportions thereof, can be stored in the remote memory/storage device1250. It will be appreciated that the network connections shown areexemplary and other means of establishing a communications link betweenthe computers can be used.

The computer is operable to communicate with any wireless devices orentities operatively disposed in wireless communication, e.g., aprinter, scanner, desktop and/or portable computer, portable dataassistant, communications satellite, any piece of equipment or locationassociated with a wirelessly detectable tag (e.g., a kiosk, news stand,restroom), and telephone. This includes at least Wi-Fi and Bluetooth™wireless technologies. Thus, the communication can be a predefinedstructure as with a conventional network or simply an ad hoccommunication between at least two devices.

Wi-Fi, or Wireless Fidelity, allows connection to the Internet from acouch at home, a bed in a hotel room, or a conference room at work,without wires. Wi-Fi is a wireless technology similar to that used in acell phone that enables such devices, e.g., computers, to send andreceive data indoors and out; anywhere within the range of a basestation. Wi-Fi networks use radio technologies called IEEE 802.11 (a, b,g, etc.) to provide secure, reliable, fast wireless connectivity. AWi-Fi network can be used to connect computers to each other, to theInternet, and to wired networks (which use IEEE 802.3 or Ethernet).Wi-Fi networks operate in the unlicensed 2.4 and 5 GHz radio bands, atan 11 Mbps (802.11a) or 54 Mbps (802.11b) data rate, for example, orwith products that contain both bands (dual band), so the networks canprovide real-world performance similar to the basic 10 BaseT wiredEthernet networks used in many offices.

The above description of illustrated embodiments of the subjectdisclosure, including what is described in the Abstract, is not intendedto be exhaustive or to limit the disclosed embodiments to the preciseforms disclosed. While specific embodiments and examples are describedherein for illustrative purposes, various modifications are possiblethat are considered within the scope of such embodiments and examples,as those skilled in the relevant art can recognize.

In this regard, while the subject matter has been described herein inconnection with various embodiments and corresponding FIGs, whereapplicable, it is to be understood that other similar embodiments can beused or modifications and additions can be made to the describedembodiments for performing the same, similar, alternative, or substitutefunction of the disclosed subject matter without deviating therefrom.Therefore, the disclosed subject matter should not be limited to anysingle embodiment described herein, but rather should be construed inbreadth and scope in accordance with the appended claims below.

What is claimed is:
 1. A method, comprising: receiving, by a networkdevice comprising a processor, data related to a handover condition,wherein the handover condition is associated with a mobile device andother network devices relating to a handover of the mobile device;analyzing, by the network device, the data to determine a type of thehandover; increasing, by the network device, a memory size of a dejitterbuffer based on the data and the type of the handover resulting in anincreased memory size of the dejitter buffer; storing, by the networkdevice, voice packet data to a capacity of the increased memory size ofthe dejitter buffer; and sending, by the network device, other datarelated to the handover condition being satisfied to the mobile device.2. The method of claim 1, wherein the dejitter buffer decreases a packetdelay variation associated with queuing the voice packet data.
 3. Themethod of claim 2, wherein the sending comprises sending instructiondata to the mobile device.
 4. The method of claim 1, wherein the sendingcomprises sending signal strength data, related to a signal strength ofthe network device, to the mobile device.
 5. The method of claim 1,further comprising: receiving, by the network device, distance datarelated to distances between the mobile device and the other networkdevices.
 6. The method of claim 1, wherein the type of handover isassociated with a length of an interruption of the handover.
 7. Themethod of claim 1, further comprising: sending, by the network device,an indication that the network device is ready to facilitate thehandover.
 8. A system, comprising: a processor; and a memory that storesexecutable instructions that, when executed by the processor, facilitateperformance of operations, comprising: receiving handover condition dataassociated with a signal handover of a mobile device between a firstnetwork device and a second network device; analyzing the handovercondition data to determine a handover interruption length, resulting inhandover interruption length data representative of the handoverinterruption length; increasing a voice packet data buffer associatedwith queuing voice packet data based on the handover interruption lengthdata, resulting in a decreased packet delay variation and an increasedvoice packet data buffer; storing voice packet data in the increasedvoice packet data buffer; and sending an indication, that the handovercondition has been determined to have been satisfied, to the mobiledevice.
 9. The system of claim 8, wherein the proportionally increasingthe voice packet data buffer is in response to receiving handoverdetection message data from a mobile device.
 10. The system of claim 8,wherein the proportionally decreasing the packet delay variationcomprises a reduction in voice playback over a determined period oftime.
 11. The system of claim 8, wherein the proportionally decreasingthe packet delay variation comprises a manipulation of a gap identifiedin the voice packet data.
 12. The system of claim 8, further comprising:sending an indication that the second network device is ready for thesignal handover.
 13. The system of claim 8, further comprising:receiving distance data in relation to respective distances of themobile device to the first network device and the second network device.14. The system of claim 8, further comprising: initiating the signalhandover between the first network device and the second network device.15. A computer readable storage device storing executable instructionsthat, in response to execution, cause a device comprising a processor toperform operations, comprising: receiving voice packet data related to ahandover detection message associated with a handover of a mobile devicesignal; analyzing the voice packet data to determine whether a conditionrelated to a voice packet data size has been satisfied; based on thecondition being determined to have been satisfied, increasing a size ofa dejitter buffer from a first capacity to a second capacity, whereinthe dejitter buffer decreases a packet delay variation associated withqueuing the voice packet data; storing the voice packet data in thedejitter buffer until the dejitter buffer is at the second capacity; andsending an indication that the dejitter buffer is at the second capacityto a mobile device.
 16. The computer readable storage device of claim15, wherein the operations further comprise: generating an indicationthat the dejitter buffer is at the second capacity.
 17. The computerreadable storage device of claim 16, wherein the operations furthercomprise: discarding additional voice packet data in response to theindication that the dejitter buffer is at the second capacity.
 18. Thecomputer readable storage device of claim 15, wherein the operationsfurther comprise: receiving signal strength data related to a firstnetwork device and a second network device.
 19. The computer readablestorage device of claim 15, wherein the handover detection message isassociated with a length of an interruption of the handover.
 20. Thecomputer readable storage device of claim 19, wherein the increasing thesize of the dejitter buffer is proportional to the length of theinterruption of the handover.